<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>事件绑定</title>
    <style>
        div{
            width:200px;
            height: 200px;
            background-color: pink;
        }
    </style>
</head>
<body>
    <div></div>
    <script>
        //1.获取div元素
        var div=document.querySelector('div')
        //2.绑定点击事件
        div.onclick=function(){
            //3.书写点击的时候执行的代码
            console.log('啊！救命啊！')
        }

        //直接在事件处理函数接受形参
        div.onclick=function(a){
            console.log(a)
        }
    </script>
</body>
</html>